摘要
针对三相PWM整流器电压环的特点,提出了一种H∞鲁棒控制方法。基于PWM整流器的数学模型,建立了满足H∞控制标准型的状态方程,并选择合适的权函数。通过求解Riccati不等式,得到H∞鲁棒控制器。由于控制器待定参数较多,权函数的选择范围较广,因此设计了一种PSO算法,对所设计的控制器参数进行整定和优化,进一步提高了PWM整流器的控制性能,具有更好的动态性能和抗干扰性。最后,通过仿真证明了该方法的可行性和有效性。
This paper proposes a H~ robust control method for the voltage-loop of three-phase PWM rectifier. Based on the mathematical model of the PWM rectifier, state equations are established for the standard setup of the H∞ robust control problem. Suitable weighting functions are selected for the system. The riccati inequality is solved to derive the H∞controller. A PSO algorithm is designed to set and optimize the parameters of the controller. And then, the performance of PWM rectifier system is better. Simulation results verify that the proposed H∞ robust control system is suitable for the PWM
出处
《煤矿机械》
北大核心
2012年第4期43-45,共3页
Coal Mine Machinery
